NAVELEX EE 181-AA-OMI-040/E121 R1860 M9443
d. Check all available information on the equipment
Inspect all resistors for discoloration due to
for aid in diagnosing problems.
Inspect the complete subsystem for the
presence of dirt, corrosion, moisture, and
bits of wire or solder inside the housings.
When the Receiver cover is removed,
do NOT touch the microphone (metal
cylinder on the PC board), or damage
Touchup paint is recommended instead
of refinishing whenever practical.
e. Make a visual inspection of the equipment.
Inspect all metal surfaces intended to be
Inspect the equipment for evidence of
painted for condition of finish and legibility
of panel lettering.
Inspect the terminal strips for clean and
referred to in table 5-1.
troubleshooting procedures, including Trouble,
Inspect all wiring and cabling for worn or
Probable Cause, and Corrective Action, are
frayed insulation and broken wires.
listed in table 5-1.
Troubleshooting procedures listed in table 5-1 may require more than one person to perform corrective
Covers should be removed as necessary to perform troubleshooting procedures.
Never disconnect a wire without first marking that wire to assure proper reconnection.
Table 5-1. Troubleshooting Procedures - Continued
a. Open or damaged
Physically check all housings and make
cover on one or
certain that all covers are straight,
flat, and tightly closed. Inspect for
any debris between the cover and
housing that would interfere with
b. Low voltage to
a. Set multimeter to dc volts. Connect
positive meter lead to TB1-7 and
negative meter lead to TB1-8.
Meter should indicate 20 +2 vdc.